Car bearing



E. A. I Aucs-HLINv CAR BEARING Filed Nov. 26, 1921 2 Sheets-Sheet 2 Aug. 17 1926. 1,596,743

Patented Aug. 17, 1926.

UNITED sTArs ELMYR A. LAUG-I-ILIN, OF OREGON, ILLINOIS,

.'PANY, OF NEW YORK, N. Y., A CORORATION OF LWIAINE.`

CAR BEARING.

Application ifled November 26, 1921. Serial No. 517,854.

My invention relates to improvements in car bearings and more particularly to emergency side bearings for railway cars, the object of the invention being to provide a simple and efficient construction of this character, capable of economical manufacture.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts Y hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and inv which, n y

Fig. 1 is a side view, shown partially in section, of a side bearing embodying the invention, y

Fig. 2 is a top plan view thereof,

Fig. 3 is a section taken on line 3--3 of Fig. 1,

Fig. 4 is a top plan view cfa modified form of construction,

Fig. 5 is a side view of the same shown .P partially in section, and E Fig. 6 is a section taken on line 6,-6 of Fig. 5.

The form of construction illustrated in Figs. 1, 2, and 3 comprises a lower housing 7 adapted and arranged to be secured to the, side frame 8 of a railway truck by means of rivets 9, one of said housings being secured to each side frame of the truck in the` usual manner. y

A roller 10 is arranged to operate within the housing 7, the top of said roller protruding'slightly from the top of said housing as shown, in` order to Contact with the co-operating wear plate 11 secured to the corresponding end of the body bolster of the car. The housing 7 is provided in its bottom with a central wear plate 12 sloping upwardly each way from the center as shown, Vso as to exert a tendency on the roller 10 Vto return automatically to central position, and -said o wear plate having its upper bearing surface transversely and concavely curved. The bearing surfaces of the roller 10 are transversely and convexly curved, as shown, on a larger radius than the transverse curvature Lof the wear plate 12 and whereby said roller is caused to contactwith the wear plate along two separated linesof contact 18 and to Contact with the wear plate 11 along a Gestell-ire .Oi wenn le as indicated. in

Fig. 3. In rounding a curve the car body pivots with reference to the truck so that the wear plate 11 travels in the arc of a circle with reference to the roller 10 and this movement exerts a lateral thrust on the roller 10 as it moves tending to crowd said roller against the side walls of the housing. The

`iustment an-d lateral movement between the wear plate 11 and the roller.

The roller 10 is vprovided at its sides with lcentral trunnions. 15 operating in longitudinal raceways 16 provided in the sides of the housing 7. The bottoms 17 of these raceways slope upwardly each way from the center at an inclination slightly greater than the inclination of the wear plate 12 and whereby said roller will be automatically lifted from contact with the wear plate 12 at each end of its travel. of the race-.ways are upwardly curved or rounded to constitute bearings for the trunnions 15 and whereby, when the roller reaches the end of its travel, it is free to rotate on the trunnions 15 to permit further movement rAS:SIG-JTGJ. OF ONE-HALF TO Q 8f, C COM The ends 17 of the bottomsV ill) of the wear platel1 if necessary and reduce the friction of such movement. y

y Two ribs 18 are extended from each end of thewear plate 12 and are upwardly curved` as shown to lit the periphery of the roller 10 and whereby, upon failure of the trunnions 15 orVV after undue wear thereon, the roller 10 willV rest uponthe tracks 18 and turn thereon as a bearing so as to permit of additional movement of the wear plate 11 .if necessary. y n y v The side walls of the housing 7 and the ou-ter walls `of the raceways 16 are upwardly `tapering in form as shown, to provide clearance'spaces 19 between the sides ofthe roller 10 and the ends of the trunnions 15 and whereby in case the roller iscaused tocrowd in either direction against the correspond'- ing side of the housing or the outer wallof the raceway,lsuch contact will take place at a point low on the sideor outer walls, .where Ysaid vwalls are thicker and stronger, and

Where the bending moment tending to burst out said'W-allfs is the least. In this Way 2L strong and durable construction is provided in which the housing for the roller may be east all in one piece; Channels 19v are formed along the sides' of the` Wear plate 12, said channelspermitting of the ready casting of the housing With comparatively closev fitting of the roller and comparatively sharp edges on the Wear plate 12; Y

The modified form of construction illustrated in'Figs..l1't'o 6 inclusive, is samelas thatV already described eXcept'that the' side- Vope-rate on the curved bearing surfaces of' the tracks 1S' and thus permit ofadditional motion ofthe niearpla-te 11 Without undue friction, the traclslB relieyingthe friction oli such'operation-ltoa certainextent.

While halve illustrated* and described the pre'lierredY forms of constructions for car# rying my invention into/effect, these-*are 'caf-A pable 'of variation and modification Without departing from the spirit of the invention. I'Qtliere'ifore, do not Wish to beflimitedt'o the Y precise details 'or construction set forth, but

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desire to avail myself of such variations'and modifications as corne Within the yscope of the appended claims'.v f Y Having' thus described my invention, what I 'claim as n'evv andl desire to' secure by Letters Patent isz' a A 1. A car bearing comprising opposed' bear'- ingmembers, onebeing substantially nat and the. other transversely curved; Vand a rotatable bearin'g' interpsed'betneen vsaid bearing members and-having its correspondng been ingr surface transfverselycdrved" on a larger radius than said transversely curvedbearing member, substantially as described.

2. A car bearinff-l` com o'r-i'sin'@ uer and lower opposed bearing' member-.s the upper bearing member being vslibstantially flat' and the lower transversely curved; and a rotatable bearing interposed between said-bearing members and?.having` its' bearing surface transversely curved' on" alarger radius than saidfliiie bear-ing ineinbei,- substantially as described." 3" rlfbeariiiglconiprisingl a ulovve'r housing ded" is; bottoni with a'- central trans er' durven w'a-p1at;twogtrrajcks te @was curved; roller arr'afnged A iii Said housingJ sans rjsaiai pate,

the bearing surface of said roller being transversely curved on ya larger radiiis than said Wear plate central trunnins on the sides oi' said roller, there being longitudinal racer'rays in the sides osaid housing to receive said trunnions, `themfbottoms of said raceivays sloping upwardly each Way from the center to lift said roller from Contact with said Wear plate at the end of the travel thereoig; and a vsubstantially flat Wea-r plate resting upon. the top of saidroller and making snbstantialli central line contact Vtherewith, substantiallyV as described.

A car bearing comprising a. lower housf provided ivith upwardly tapering side Walls and in its bottom with a centraly transversely'curvedy rvear plate; tW'o' tracks eX- tendingerom each end or 'said Wear plate,

the ends of said tracls'l bei'iig'upwardly curved; a roller arranged 'in said liousinlrj, the bearing surface of-said roller being transversely curyed on' a larger radius? than said Wear pl-ate; central tr-unnins on'v the ksides of said r'oll'er, therebeingf longitudinal' raceways in the sides of said housing tof receive said trunni'ons; tliebottoins of ,said raceiv'ays Y' sloping upwardly each Way from the center to lift said roller lfrom'conta/ct with said' tvea'r plate atrth'e: end ofthe travel thereof; and a substantially'liat Wearplate resting upon the top of said roller and mak'- ing rsubstantially centrall line Contact therewith, substantially as described;v 5. A'car bearingv comprising a housing having a central Wear plate anduroller supporting tracks at each` end ofmsaid Wear plate and constituting continuations thereof, substantially as descr'need'.` A

6.- A'r car .bearing comprisinghousing haviiig acentr'al wear plate; Iand roller supporting tracks at each end of said wea-r plate and" constituting continuations' there'- or curved at their ends to' littlieperipheries Vof `a roller'1 substantially as described. I

'tomfs of saidy rac'eways slopingV upwardly each Way "from the center to lilt said roller from contactfwitli said Wear platte, at the endI otits tfra'vell'; and!v a co-opera-ting Wear plate making contact with said roller,` al portion ofAV said vroller -prtrudingirfrom said housing" -f'or this purpose, substantially' as described; i L A. .Y .y e

8l carl bearing?coniprising-` afA housing hayi'ngY-a centralivear platefg'rol'le support'- ing tracks at eachiendof'f said' wearp'late e'jrnstitutirn continuation ,"tli'ereof.; the

`end'sofffsaid traolsbeing upwardly curved.;

a roller in said housing; trunnions on the sides ot said roller, there being longitudinal raceways in the sides of said housing to receive said trunnions, the bottoms 0In said raceways sloping upwardly each way from the center to litt said roller from contact with said wear plate at the ends of its travel, the ends of the bottoms of said raceways being upwardly curved to constitute bearings for said trunnions; and a (zo-operating wear plate making contact with said roller, a portion of said roller protruding from said housing for this purpose, substantially as described.

9. A car bearing comprising a lower housing having upwardly tapering side walls and a central transversely curved wear plate in its bottom; two roller supporting tracks leading from each end of said wear plate, the ends of said tracks being upwardly curved to form roller bearings; a roller ar ranged in said housing and having transversely curved bearing surfaces curved on a larger radius than said wear plate; central trunnions on the sides of said roller, there `being longitudinal raceways provided in the said roller from Contact with said wear plate at the ends of its travel, the ends of the bottoms of said raceways being curved to Constitute bearings for said trunnions; and a substantially tlat wear plate contacting with the top of said roller, substantially as described.

l0. A car bearing comprising upper and lower opposed bearing members, the upper bearing member being flat and the lower bearing member being transversely and con- Cavely curved; and a rotatable bearing interposed between said bearing members, said rotatable bearing being transversely and convexly curved but having less curvature than said lower bearing member, substantially as described.

In 'testimony whereof I vhave signed my name to this specilication.

ELMYR A. LAUGHLIN. 

